hello, everyone. top of the hour. you're in the "cnn newsroom." it's not much for searchers to go on. they're the first real clues after many, many days of nothing. off western australia a british navy ship took half a day to reach the area where chinese heard lelectronic pulses that might have come from the sea floor. the ship has on site for a few

hours. search coordinators describe what they're looking for as acoustic v events. pilots call them pings. we'll talk much, much more about that with an audio expert coming up. chinese searchers say they picked up pings twice. over two days. also today investigators trying to figure out why the plane would fly this route. skirting the coast of indonesia before heading for the open ocean. that flight plan was confirmed today by malaysian officials. and if you're counting days, like a lot of people are, today marks the 31st day since malaysia airlines flight 370 just simply vanished. live right now to the place where the flight originated. kuala lumpur, malaysia, and our jim clancy. jim, i remember when this mystery was just a few hours old. you were there at kuala lumpur airport. who would have predicted we'd still have no answers 31 days into this? tell us how that place and the malaysian people have handled this major international event over the past month? >> reporter: you know, i don't think anybody would have.

certainly i wouldn't have. we arrived here on the 8th of march. it's now the 7th of april. i really thought this would be resumed if not in a matter of hours, in a matter of days. our evidence told us that the plane was last seen in the middle of the south china sea. it was only three, four days later that cnn, through sources here, determined that, in fact, that plane had made an abrupt reversal in course, flown through the malakas straits and was on its way into the indian ocean. some 90 minutes after takeoff. it opened up a whole new world of questions. and we've seen it. you've seen it, don. the speculations that read like movie scripts about what happened to this plane. now we learn there's further evidence that it tried to evade detection. evade some kind of intervention. we find ourselves searching half a world away. it looks like it plotted a course for antarctica. you ask yourself.

what kind of plot is that? don? >> yeah. hey, jim, you know, this news that we heard last night from angus houston and also that we're hearing from other officials, those possible clues caused any visual optimism in kuala lumpur? >> reporter: yes. i think there was. it raised some optimism. it raised hopes. the people have been through it so many times before, don. i mean, one time after another. i can remember searching the south china sea, the oil slicks, the debris. the plane wasn't even there. you know, we've been through this so many times. i think everyone -- one of the chinese families said, yes, we're watching it closely. but we've got to have patience. that's what we all need right now. patience. just like we had on day one. back to you. >> all right, jim clancy, thank you in kuala lumpur. want to bring in our panel of experts this hour. cnn aviation analyst mary schiavo. cnn aviation correspondent richard quest back with us again today. cnn aviation analyst les abend

is here back with us as well working until the midnight hour, well past the midnight hour last night. paul ginsberg is with us here. i'm very excited to have him. a forensic audio expert in the business of analyzing black box recordings. so, paul, thank you. i want to start with you. it is so fascinating when i heard from you, then we've been speaking a little bit before. are you skeptical about these pulse signals because they weren't continuous like they should be? >> exactly. if there's something transmitting, you expect it to be continuous. as long as you don't go out of range of reception. now, i will tell you that 37.5 kilohertz is above our hearing range. it's almost like super hearing frequency rather than a radio frequency. in fact, i would -- i would guess that dogs or mammals, you know, may even be able to hear these sounds. like dolphins. >> you have a very simple

explanation as to what -- and we have some visuals to show of that. you have very simple explanation as to how we figure this out, if it's actually pings from the black box. you say number one is frequency. >> yes. we're looking for 37.5 kilohertz. >> okay. >> on the screen you see two different wave forms. one is of a constant frequency. and the other one is what we call a chirp. where you see on the left side and the right side, they're different frequencies. they're varying, different amounts. so if this pinger was programmed to be a chirp, you would recognize that and it would be differentiated from anything else that was not with that particular frequency, duration, repetition rate, lots of different ways to describe it. >> we're going to have some sound of that in just a little bit. so it's either a pure tone or chirp. you said the duration of a tone burst. >> yes. the manufacturer sets how long

it transmits in each cycle. where a cycle is apparently one second. but it could, perhaps, transmit by .1 second. or .2 second. you can compare characteristics to what the manufacturer says -- >> you have to know what type of -- who manufactured the black box on that plane and you would know. >> exactly. >> the folks who are out on the water, right, who are using these instruments, these hydrophones, can they record what they have found and then compare it to the type of instrument on the plane? >> absolutely. in fact, they can record not using tape recorders, but digital recorders. i have a number of sets of software packages that would allow me to do that were i on the scene. >> repetition rate of received pulses. >> right. that's the -- that's the one

second repetition of the programmed pulse train. >> what do you mean by the shape of the pulses? >> well, the -- the pulse may be constant throughout its cycle. or it may vary. it may increase. it may decrease. and all of this would be identifiable and, again, something that you could compare. >> what are we looking at there? is that the shape of the pulse signals? >> okay. that's an example that i put together. it's not a real pinger. but it's to show you that we have one second intervals and for each second, i have .2 second pulse within the one second. i don't know whether they have the audio wave sound that i produced. >> we'll have it for you a little bit later on this hour. yeah. >> okay. finally, the amplitude that is the strength. >> amplitude of received pulses. >> right. the strength of the received

pulses is very important because, especially when you're trying to plot this versus position to determine where this device is. so you can plot so and so received signal strength over here. and when the ship moves it's a little louder. a little stronger. then it's getting weaker again. if you come back and make a track, you can pretty much do a contour of signal strength to determine what's the most likely position of the device below the surface. >> steady or fading? is that what you mean? >> that's a function of the water. the medium through which the signal is passing. in this case, the ocean. >> yeah. so does it concern you that we haven't heard it any more? is it the last pulses? it could be the -- possibly the last pulses if it is, indeed, it? >> it does. i mean, i -- as all of us do, we -- we certainly pray that

what they -- what they detected was not the last dying gasp of the batteries. >> of the batteries. yeah. and you've done a number of these before? audio -- >> yes. black boxes and cvr -- cockpit voice recordings. >> mary schiavo, this is exactly -- the kind of information paul's talking about is exactly the information and the way investigators go about it with audio experts like him. >> right. that's correct. you need -- you have to have the audio experts not only to analyze the information from the black box, but then eventually to present it in a courtroom. but it's really important because everything about the black box is significant. you know, the -- first of all, finding it. then the information on the black box. because of the pinger, is what we call it, is so unique, as your guest has just explained, that's going to be the one thing they hopefully will find in the whole ocean is this one little sound. >> one little sound.

all right. stand by, everyone. our panel of experts is going to stick around. next, it is monday morning in australia. a new day of searching is under way. we're going to go live to perth. that's next. and two pulse signals and what's being called an acoustic noise have been detected in the water. our ocean search specialist joining us after a quick break. [ male announcer ] what if a small company became big business overnight? ♪ like, really big... then expanded? ♪ or their new product tanked? ♪ or not? what if they embrace new technology instead? ♪ imagine a company's future with the future of trading. company profile. a research tool on thinkorswim. from td ameritrade. a research tool on thinkorswim. save you fifteen percent or more on car insurance.d everybody knows that. well, did you know pinocchio was a bad motivational speaker? i look around this room

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just hours ago a prettyish ship carrying cutting edge technology arrived in the area where two pulses were heard. it could provide the big break everyone has been waiting for. senior international correspondent matthew chance live in perth, the hub of the search operation. matthew, what's happening there? >> reporter: well, it's been four hours now since the hms echo, that sophisticated british ship, arrived in the area where the chinese detected those apparent pings over a course of a sort of 36-hour period. one of them just 90 seconds long. using pretty basic technology.

you saw the images, perhaps, of the kind of things they were using. used to shallow depths. what's going to happen now is this british ship will bring the latest, perhaps the most sophisticated technology to the area to try and verify what the chinese apparently came across. to see if it's related in any way to that missing malaysian airliner. it's not the only area that's being searched a t the moment. another key area is the area being looked at by the ocean shield, which is an australian vessel, dragging behind it a bit of sophisticated american tegnology for tracking these pingers. that's in an area 300 naught ca cal miles away from where the chinese signal is. that's being termed an acoustic event in that area as well. see if that's a potential possibility where the malaysian airliner could have come down. a couple of places where the focus o f this search is now happening. at the moment still nothing verified as to being anything linked with the missing

malaysian plane. >> matthew chance at the hub of the operation for the search in perth, australia, thank you very much, matthew. you know, the race is on to follow these new leads and possibly find the black boxes. then possibly find the plane. ocean search specialist and cnn analyst rob mccallum joins me now from seattle. rob, these pulse signals seem to be the best lead we have got. so where do we go from here? >> well, they are the best lead we have at the moment. not forgetting ocean shield is also on to some sort of acoustic anomaly. you know, this is the only real lead we have at the moment. the priority of the day is to get assets into the water and to listen. both from echo and also perhaps from sonar buoys. >> how much skepticism should we put in this? should the search teams be skeptical of these reports of audio content, rob? >> that's a good question. you know, the video footage that we see is of a hand held device,

hand held pinger locater which was only ever designed for relatively shallow water, close order kind of work. it was always going to be a big ask for the towed pinger locater to locate the pinger. to do it on a hand held device is a long shot, indeed. >> mm-hmm. the question is, what else could it be? what else could it be? some people said it could be ocean light. could be a whale. could be other instruments used by the military. we're not sure. we're going to explore those possibilities with rob and our other guests right after this quick break. a more enjoyable way to get your fiber. try phillips fiber good gummies. they're delicious, and a good source of fiber to help support regularity. wife: mmmm husband: these are good! marge: the tasty side of fiber. from phillips.

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the search to track down three mysterious pulse signals is happening right now in the southern indian ocean. i want to bring back rob mccallum, cnn ocean search specialist and expedition leader. if you were heading up this search right now, given what you know, where would you be going from here, rob? >> the first priority as always is to follow the acoustic leads. there are two of those today, which is, you know, great. but i'd also be continuing with the reanalysis of the original data that got us into this area to try and pin down the search area for possible other pinger deployment locations. >> hey, rob, i'm glad you said that. because we have an acoustic expert, a sound expert. as a matter of fact, he's known as an acoustic archaeologist.

>> audio archaeologist. because i dig very low sounds out of noisy situations. like restaurant noise or sometimes cockpit audio. >> so what do you do, try to figure out who -- just anything -- whose voice it is? what the sound is? >> sometimes. sometimes i want to have a pertinent conversation that happens to be, say, evidence of a crime in a criminal case. and not be listening to everything else that's happening in the restaurant. so my job is to pinpoint or -- >> so i said what else could it be? some people said it could be sea life. you said it could be sea life but -- >> well, no. i said there are so many characteristics that a pulse from one of these pingers would have that if it -- if you heard something and detected something that had all of these ar characteristics, then i would say that is what you're dealing

with. >> let's go over it, right? you talked about the frequency. you talked about the pure tone or the chirp. which one do you want to hear first? the tone or the chirp? >> okay. let's hear the pure tone. it's like a whistle. pulsed. [ chirping ] >> okay. >> now, what that is, is -- it's a burst of pure tone for .2 second, repeated each second. >> okay. >> in other words, within each second, one fifth of it or .2 second is the tone. that's at a single frequency. in this case 1,000 cycles. so we can hear it. in our real case, it's 37.5 thousand cycles. they above our hearing. that's what the dog or the or the porpoise would hear.

had it been set to chirp rather than pure pulse so it would be more easily identifiable -- >> listen. >> -- it would sound like this. that's very similar to what you had been playing for days as the example. and it's like -- it's like a combination lock. you can set the chirp to go from one frequency to another. in fact, you can set it one way for one aircraft pinger and another way for another aircraft's pinger. >> so if you're hearing either the tone or the pulse, then you know -- and those bursts, then you know it's not a whale. it's not a military -- >> correct. >> -- other frequency or something, a dolphin that has been tagged. >> i would say yes because it would have all of the characteristics with precision. and we can measure to one ten

thousandth of a second. >> so the chinese boat that picked up a sound, right, the haixun 01, the ocean shield which possibly picked up a sound, all they have to do is compare it to what type of sound that has been programmed into the black boxes or the audio recorders. >> exactly. >> on 370. >> and see that all of the characteristics agree. >> yeah. okay. great. everybody wants to ask him questions about this. rob, i'm sure you have questions. les is champing a t the bit to ask him questions. after the break. don't go anywhere. this is fascinating.

you're in the "cnn newsroom." i'm don lemon. priority one. find out if there's anything to those pings heard this weekend by the chinese search crew. there's a hunt for 370 and a specially equipped ship just arrived where the pulses were picked up. the british navy ship had high-tech detection gear on it. they have been onsite working for a few hours now.

then there's that emergency beacon itself. where it is the batteries won't be good for much longer. today is day 31 since malaysia airlines flight 370 vanished. in the indian ocean right now a frantic search is under way to track down three mysterious pulse signals. two of them apparently matching the same frequency of a black box pinger. cnn aviation analyst mary schiavo, cnn aviation analyst les abend, paul ginsberg, forensic audio expert, hopefully you'll become an analyst here on cnn. i would love that. mccallum, cnn analyst and ocean search specialist. i'm going to play examples of the sounds they're now listening for. the first is called a chirp pulse. listen. [ chirp pulse ] >> the other is called a pure pulse. [ pulsing ] >> all right? so those are the two things. those were played -- those were

provided to us by paul ginsberg here. richard quest, come on in here. we want you to weigh in on this. we have been listening to the information that paul has been providing us about the search. and about the differences in how these black boxes could be programmed. their frequencies. obviously it's the same frequency, but they can be programmed so that you distinguish between one black box or another from different airplanes. >> well, they can be programmed so that they repeat every second. >> right. >> every second and a half. every half second. and that the burst duration can be programmed to different times. the frequency can be programmed. and whether or not it's a pure tone or a chirp so that each one can have a different -- a combination that's unique. >> okay. >> and identifiable. >> all right. i know rob mccallum is there. les, you had a question for him. that was? >> paul, is it important to know what box or what the cvr, the

dvdr that has the pingers attached to them, which one is which in order to locate this signal? >> well, they have to know what to be listening for. it's like trying to listen for extra terrestrial life. you have to know which direction to point your antenna. which frequency range to listen on. what the duration would be. whether or not what you're receiving is noise or is, in fact, what you're looking for. and the manufacturer as well as the installation and operation can no doubt tell you exactly how each of these was programmed. >> are they all 37.5? >> i believe it's programmable. >> okay. >> rob mccallum, you have a question for paul? or anything you want to add? >> i'd like him to comment, really, in that, you know, pingers are used widely in the deep water industry for

relocating science packages that are left on the sea floor and need to be retrieved later or retrieving fishing gear. anything you really need to get back to that exact spot you put a pinger on it and come back later. do you have any comment, paul, on how far a signal from a commercial application might have traveled? >> that's difficult to say because we're talking about the medium through which is signal is passing being the water. and whether or not it's still. which, of course, we know it's not. it's moving. also, you may have all sorts of obstructions. whether it's the rest of the aircraft sitting on top of this pinger. or sea walls to the left or right which are impeding the signal. it's almost like an audible signal. it's almost like a sound in a

room -- coming out of a cave. where if you're in front of the cave entrance, you could hear it. but if you're to the left or right, it's being just directed upward. >> it would go right past you, right? >> yeah. it's possible. it's all different. >> mary, you want to get in on this? you have a comment or question? >> sure. i have a question. you know, we've heard over the past couple days that perhaps these pingers could be used on other applications. like undersea expiration equipment or fishing gear equipment. i was wondering if the guest knew if there was any difference, if there's any industry standard if you would set the frequency and more importantly the -- the timing on the ping for one way for an aircraft application and perhaps slightly different for oceanographic expeditions, et cetera, or if there are no standards as to how you must set them? >> i'm not aware of specific standards. i would expect that there is --

the frequency of 37.5 kilohertz as the center frequency that we would be looking at. in the same way that we would be looking for, what is it, 121.5 for a beacon. but i'm just saying that the equipment can be set. it can be programmed higher or lower, depending upon what the application is. >> but no industry standard for -- >> not that i'm aware of. >> richard? >> absolutely fascinating. >> he's amazing. >> absolutely fascinating. really. so pull the strings together if you would. bearing in mind now what you've been saying and what you now know that they are engaged upon, how difficult is it? >> oh, it's very difficult. we're not talking about a swimming pool. we're talking about, from what i understand, about 15,000 feet

through this water. the signal is very week ak to bn with. we're at the end of the battery life. there's propagation. there are echoes, also, that they have to deal with which make it very difficult. because they can distort the shape of the received pulse. you see? so there are a lot of different things playing in here. and if you heard the reception or you detected the reception, you would -- it would not be a clean signal to begin with. >> no. all right. we got to go. you have another one? >> in a word. are you still surprised that the aviation industry uses something so basic as the pinger to find something so important? yes or no. >> well -- >> hang on. don't answer that. after the break. i want to ask him, too, why is

all this information, which i asked you before the show, why is all the information presumably still at the bottom of the ocean with this plane and not in some information system in washington or somewhere in the united states or elsewhere? we'll be right back. don't go anywhere. hey kevin...still eating chalk for hearburn? yea. try alka seltzer fruit chews. they work fast on heart burn and taste awesome. these are good. told ya! i'm feeling better already. alka-seltzer fruit chews. enjoy the relief! and his new boss told him two things -- cook what you love, and save your money. joe doesn't know it yet, but he'll work his way up from busser to waiter to chef before opening a restaurant specializing in fish and game from the great northwest. he'll start investing early,

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richard quest is back with us trying to hijack the show a little bit earlier. but that's all right. just kidding. you had a question for us. >> successfully. >> your question was what to him? >> it was really this.

bearing in mind the -- so much rests on the pinger, are you surprised that we are still using something so rudimentary for something so important? >> i'm a little surprised, however i don't know of anything better. what i would suggest is that there are people in the intelligence community who i know developing longer lasting batteries. and so whereas the pinger may be the best thing we have now, it could last much longer. >> my question is, why is all this information presumably on the bottom of the ocean with this plane if that's, in fact, where the plane is instead of in some information system place or warehouse where all of this could be stored? >> this is after the fact technology. >> yeah. >> it's what we -- >> why is that? >> i agree with you. what's implicit in your question is why isn't it somewhere else.

>> right. >> other than on the bottom of the ocean. >> right. >> presumably. and that is something that needs to be addressed such that we have all of the data, both the voice and from the data recorder, being up linked constantly to satellites and stored in either government agency and/or the aircraft company office. >> right. >> so that we never have this situation repeat. >> yeah. thank you. you're not going anywhere. for some reason now, you are the favorite guest. the favorite guest on this show. i think i can figure out why. because you're -- quite honestly, you're a wealth of knowledge. my producer goes, sorry, les. of course, les abend is a wealth of information as well. >> and mary. >> the question is, though, why did this plane, according to the new information, fly around indonesian radar supposedly? well, we're going to check that

out and see how possible that is in a flight simulator with our martin savidge coming up in just moments. they're getting ready now. don't go anywhere. of eight princesses. i'm on expert on softball. and tea parties. i'll have more awkward conversations than i'm equipped for, because i'm raising two girls on my own. i'll worry about the economy more than a few times before they're grown. but it's for them, so i've found a way. who matters most to you says the most about you. at massmutual we're owned by our policyowners, and they matter most to us. ready to plan for your future? we'll help you get there. humans. even when we cross our t's and dot our i's, we still run into problems. namely, other humans. which is why at liberty mutual insurance, auto policies come with new car replacement and accident forgiveness if you qualify. see what else comes standard at libertymutual.com.

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casado. according to a malaysian government source flight 370 curved north around indonesia before turning south toward the indian ocean, taking it around indonesian air space. is this something that is preprogrammed or is that something done manually, guys? >> well, i guess you could say it could be done either way. but for the purpose of this scenario, we both agreed that it was probably preprogrammed if, in fact, it happened. and that, of course, would certainly introduce the idea that this is a sinister criminal and not an accident. i'll let mitchell explain what he did to come up with the new route. >> what i did here was just program what i -- what made sense to me for waypoints. >> there's no way points they used. >> there's no way to know until we get the recorders back. we would have come from this direction here. actually this white dot here is the airport at kuala lumpur. we would have headed this way toward the northeast and headed toward beijing and continued into this area here.

what actually happened is they made a left turn. this blue stuff here, that's malaysia. they crossed over the country. then here's indonesia. they made a wide left turn to skirt around indonesian air space. gave it a really wide berth, enough that it wouldn't be seen on radar. then south toward the -- >> to enter those way points, how many did you put in to make that route? >> took me about a minute and a half. about 18 way points. >> in essence, a minute and a half is using the flight management system, a keypunch system here in the cockpit, you could make that new course correction. how about this? wh could you have preprogrammed it on the ground? >> you could have preprogrammed it on the ground as long as the other pilot was okay with it. >> there's no way you could have done it on the fly and the other pilot, co-pilot not know? >> no. >> back to you. >> guys, les abend has a question for you. >> hey, marty and mitchell. for you, that's very cumbersome,

i think you and i would agree on that. all those way points. it would take me longer than it did you. would you not agree that maybe heading select was utilized for that, for all that turn with the autopilot still on? >> yeah. i totally agree. if the -- it is totally possible. you know as well as i do that heading select -- but the only thing with that is, you have to know the heading to choose. to know that i think we can both agree they'd have to look into the charts -- or would have had to look at the charts beforehand to know which headings are going to take them around that radar air space if, in fact, that's what they were trying to do. >> what does that mean? what does that mean, marty? heading select versus way point? >> point to the mode control panel for don if you would, mitchell. where heading select is, if you would. >> sure. >> just turn that knob. >> for people who have no idea what you're talking about, heading select means you're selecting a specific heading?

>> a specific heading. the airplane will turn to that specific heading. you can constantly turn the airplane with the knob mitchell is pointing. >> as opposed to taking way points. >> that's correct. >> it will take you here and here and here and here? >> correct. i was going to ask mitchell, you also not also navigate by the radar, putting it down. pick up ground clutter and know where water is, land is, with the radar? >> what was the reason be -- why would you use way points as opposed to heading select as opposed to radar? what's the difference? what would that tell you about what happened to this airplane? >> well, if way points were used, that would be a -- a definite plot. and that would be a very complicated plot. it wouldn't make sense to me at all. >> okay. >> i would use heading select. absolutely. just too complicated to put in all those way points. >> mitchell, what does that tell you? what's the difference? >> the way points, it's a lot more work. it's a lot more preplanning. there's a lot more premeditation

in my mind to use way points. it's a lot of work to figure out what way points to choose. heading select is more, you know what? maybe i don't want to go to beijing. maybe i'll just do this. >> okay. so you said it's -- it shows a difference in premeditation. >> premeditation, absolutely. if you're putting in all those way points. i mean, that was a lot of way points. i commend mitchell for putting all those in. that was -- 18 way points, that's a lot of way points. >> all right. don't go anywhere. thanks, mitchell, marty. we'll see you soon. stick around. much more ahead on the search for flight 370 still ahead, including how you recover a plane from 15,000 feet below the surface of the ocean. next, a landmark anniversary just a couple of days away. an exclusive conversation with the man many consider the real home run king, hank aaron. that's coming up. imagine if everything you learned

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back to our top story in

just a moment. the search for malaysia airlines 370. first is some other news. president barack obama plans to attend the memorial for the shooting victims at ft. hood, texas. the first lady will attend him. three soldiers were killed. 16 others were wound when a soldier opened fire before taking his own life. this little spied per you're about to look at is making a headache for mazda. the automakers are recalling more than 40,000 vehicles saying these pesky spiders love to spin their webs inside the fuel lines which can clog them and potentially cause a fire. it turn out the yellow sac spider really likes the smell of gasoline. mazda had a similar problem three years ago. they recalled more than 50,000 cars then to install a little gizmo that keeps the spiders out. two days from now, tuesday, april 8th, marks the 40th anniversary of one of sport's

greatest achievements. on that date in 1974, hank aaron hit his 715th home run, babe ruth's record that had stood for decades. with that swing in the home town of martin loorth he king jr., he struck a mighty blow for civil rights as well. cnn sports contributor terrance moore is here and a contributor to mlb.com. i haven't seen you in a month of sundays. >> talking about the little plane i guess. >> yeah, yeah. you have something special for us. an exclusive excerpt from hank aaron. he rarely gets interviews. how did you come about getting this? >> i've known hank for more than 30 years. he and i have always gotten along great. he will talk to me when he won't talk to anyone else in the media. so with that anniversary coming up, i gave hank a call. he graciously agreed to do the interview. here's the thing, don. hank is recovering from hip

surgery from slipping on the ice here in atlanta which tells you how great this was that he would do this. we sat down for over an hour to talk about anything and everything you could possibly imagine. >> i've always been one to, in spite of all the things that i went through, you mentioned some of them, i've always been able to separate the two. i always felt like once i got -- once i put the uniform on and once i got on the playing field, that i could separate the two from an evil letter i got the day before or 20 minutes before. that i could concentrate on what i had to do as far as trying to watch a fastball. someone throwing a ball at 90 miles an hour rather than worrying about a letter that somebody sent. and i was able to concentrate that simply because i guess you could say, god gave me a separation.

gave me the ability to separate the two of them. >> do you ever wonder sometimes how much -- what you would have done without all that stuff? could you hit like 900 home runs instead of the 755? >> you know, i often -- that is one thing i often think about. nobody ever asked the question, if i had had the means, if somebody had said, oh, hank, come on. let's go out and have dinner tonight rather than worrying about slipping out of the back doors of ballparks or staying in a hotel that your ball players, or your teammates were not there. i don't know what i would have done. >> let's go back to that date, april 8th. you hit the home run and it is going toward left center field that al downey is the pitcher. you're running toward first base. let's stop right there. what do you think about when you're going to first base? >> not much of anything.

i think when i touch first base, when i got almost to second base, i started thinking about, i start thinking about, isn't this wonderful that here i am, the third oldest child of estella and herb aaron and the two of them are sitting in the stands watching me play professional baseball. isn't it wonderful that they could be here on this day to witness history. and i tell you, to this day, i don't know how she managed to do it. i think bartholomew told me, he opened a gate or something but she got to home plate quicker than i got to home plate. >> that's a great scene. bill bartholomew, the breaker of the braves. the tears were flowing. what was said during that moment when you were at home plate and she was there hugging you? >> i don't think there was much

said because she was -- i don't think i could say much really. but she was happy. she was very happy. and i was also. >> i tell you what, there is a lot more to this too. and people don't realize how funny hank is. wait until you hear the clip who made $250,000 at most in a season, how much he thinks he would make today. his answer, he would be a replacement for david letterman, he was so funny. >> i can't wait to see that. thank you. be sure to join us next saturday evening with more of cnn's conversation with hank aaron, including his thoughts on jackie robinson and some interesting comments about the always controversial barry bonds. plus, terence has written a special comment for our website, besting ruth, beating hateful how hank aaron made baseball history. look for that on tuesday on cnn.com.

you're in the cnn newsroom. thank you for joining us. for so many dead ends, days on end, no clues came out of search for that long missing airliner. now this weekend, they are faint but they are clues. and searchers are chasing them with the best stuff they have got. right now a british navy ship is in the area where a chinese crew detected some electronic pulses on a frequency used by locator beacons. our analysts warn us not to get too excited about this. these pings could turn into nothing. the australian official heading up the multinational search missions calls these new leads the most promising. we just heard from the search coordination center that three civilian planes, military planes and 14 ships are out scanning the search areas today. here's another mystery. did the plane try to avoid indonesian air space station? it apparently steered a mysterious course around the country. why did it do that?

was somebody on board trying to avoid radar? no one knows. i want to bring in our correspondent. the hub of the search operation and jim clancy is in kuala lumpur. the navy ship hms echo is on the scene. tell us what happened. >> for the past several hours, according to the british ministry of defense, it has been on the scene and started its work trying to verify what the chinese say they detected with pretty ordinary, some pings on two separate locations, two hours apart and 12 hours apart as well which might not have anything to do with the missing malaysian airliner but enough for a significant redeployment by the australian led search teams here. that involves the deployment of australian aircraft in the skies and of course, this deployment of hms echo which is one of the world's most sophisticated mapping ships.

on an oceanographic survey. and it is equipped with some of the most high-tech equipment that there is available to try and verify these pings and to try to map the bed of the ocean where this missing malaysian airliner could be. it will be a big contrast with the kind of equipment the chinese say they identify these apparent pings with over the course of the past several days or so. we'll see whether they are able to verify. again what the chinese say they detected. >> jim clancy, you have been in kuala lumpur since day one of the investigation. malaysian authorities just today confirmed they believe the plane deliberately skirted indonesian air space? what are they saying about that? >> well, you know, this source has given us some good information about how this plane traveled. this extends that information and it may reflect the cooperation of neighboring states giving up their military radar records to help confirm the flight course.

but we have known for some time that it went up through the streets and did this. it is more circumstantial evidence to say the plane may have been purposely steered in the manner that it was. does it really answer any questions? not necessarily. we still need that evidence that matthews is talking about. the flight data recorders that are somewhere believed to be in the south indian ocean. that's still very much needed. we have all the theories that have come together and we have no facts. these two things collide and were unable to really fathom what really happened in that cockpit on board that flight. malaysian 370. >> tim, thank you very much for that. we appreciate you and we always appreciate matthew chance as well. time to bring in our cnn experts. mr. richard quest, tim taylor, submersible specialist and you can see he has one on the set.

paul ginsburg, and adam diehl, a former air force investigator. and rick is the executive director of the group for historic aircraft recovery. i'll start. but let's talk about this very curious route, skirting indonesian air space. looking at this as an investigator, is there anything suspicious about this for you? >> well, of course, this hasn't really been verified. it is some leaked information. it may well be true. if it holds up, it would be curious. it said somebody had to be at the controls, don. and i'm not sure where we go with that. like so many things in this investigation. but incidentally, i've done -- i know you were talking about in the last segment, a jetliner landing in the water. that was the first accident i did for the national transportation safety board was one of those and it was interesting, too. >> yeah. richard quest, do we know if this is true? >> back on the 25th of march

when we got the very first data, if you look at the map, the examples of the southern track, i'm only showing it to show, what we have is actually exactly that. it goes north, it then goes to the west and it does an arc around the northern tip of banda aceh. what is different now is that sources in malaysia are saying this route is part of the reason why they're now saying nefarious. they use the pings and the hand shakes to determine it went in, out, around. >> so you have, tim, you have the submersible here. so what happens now? does this change anything as far as the search for this plane? the search for the black boxes now that they've heard these pings? >> it kind of does. they have a ping whether it is

legitimate or not. if it goes away, unless they can reacquire it, they'll to have put the bigger brothers of this into the water and go looking, do some kind of search pattern. >> this scans the bottom with sound. it takes long range pictures, a mapping of the bottom, 1,000 meters on each side if it is the bigger vehicle and brings them back so we can locate the wreckage. >> what is that? >> this is where they will emanate the sound out. >> it was recorded on the internal hard drive and you recover the vehicle and you download that data. >> what is this here? >> this is its antenna. on the bigger versions, everything will have an antenna. it can talk to satellites, it will have gps over you can pick up gps. it brus all the navigation data

on the surface. when it dives it has internal navigation, ins systems and a few other complicated updating systems that will send signals from the boat. as well as doppler. >> you're awfully curious. >> there is only one question to know, how much? >> this system load with an ins is $300,000. >> that small? >> well it is a little bigger. the ones they're using are $3 to $5 million. >> accident recovery, you've recovered historic aircraft, right? so what is this? what does had change with the new information? i'm not sure if the route around indonesia changes anything for you. now that they have heard these possible pings in two different locations of the ocean, how does this change anything if at all for you? >> well, the idea that there seems to be purposeful invasion of air space falls in line with

something i've been saying for a long time. that this aircraft was probably abducted by someone and they had a purpose in mind. they were on their way somewhere. maybe they never reached their destination but this is more and more like a deliberate act under human control. and incidentally, i have rather extensive experience with auvs, apparatus underwater vehicles. and i can tell you, we used one in 2012 on our air hertz search. in that case we were searching a steep coral reef. when you have steep terrain, the auv is not an appropriate technology. they have tremendous difficulties with those, with that kind of terrain. we had repeated malfunctions, aborted missions, it was a nightmare. so it will depend a lot on what kind of terrain. we do get pings and we get an

idea where the airplane is to go look for it. it makes a big difference whether it is flat sandy bottom where you get a nice sonar return or steep canyons or a coral environment. that will be really difficult for an auv. >> what do you say? >> we agree, of course. >> i'll tell you, it will be difficult for any sonar system if it is in rocky terrain. it goes with the territory. it is going to be difficult. >> it is just how it is. >> you can't tow stuff through it, you cannot run stuff through it. >> everybody sit back and listen. we'll go to you, paul, so you can tell us about this. they're for the cockpit voice recorder and the flight data recorder. and many people have been saying, well, listening to the audio recordings, you can't distinguish much. those can provide, there are specific ways to figure out who

is talking and you're better at explaining it. >> well, we've got the pinger to try to locate the most valuable piece of evidence that we have with the most information. both the cockpit voice recorder and the data recorder. as far as the voice recorder, we can certainly determine who is speaking because there are four discreet channels. one for the pilot, one for the co-pilot, one for the cockpit area microphone which picks up all of the sounds within the cockpit. whether they're human voices or engine sounds, alerts, alarms, anything that can be heard in the cockpit. and the fourth one is generally the intercom system. >> you said through all of that you can tell if the plane is operating properly, normally and he'll tell us how he can distinguish that by using sound coming up right after this break. ap me in a rate. that's correct.

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underwater sounds heard at three sites in the indian ocean, two of them very close together. the question now, were they from the flight's missing pinger? a chinese ship detected pulse signals on consecutive ships. an australian ship is also investigating pings it detected from the north. so let's try this again. wave been talking about this. we'll get to the pulse and all those things. you were saying once we do get those things, if we do get them, you said we can distinguish whether the pilot or the co-pilot or who was talking. something very interesting you said, we don't need to hear them talking. even just from listening to the airplane sounds, the am beent noises, you can tell what's going on? >> we can track the engine sounds, any of the alert sounds.

the alarms, to see whether there was anything that they should have been addressing. there are ways, on one air case that i had recently, we were looking at a reverse thruster on one side of the aircraft. and i was able to determine which side it was because i compared the level going through the pilot and the co-pilot's microphones. one being closer to the side the reverse thruster had been activated and the other one hadn't. so there are lots of clues. i can even tell whether the condition of the power supply on the aircraft is stable or is changing from the him component that is embedded within the audio signals on each of the channels. >> and you said something about, you can tell if the plane is going into a stall. >> there's something called a stick shaker which is safety mechanism built into aircraft.

such that if the may not is going to stall, if you're climbing too quickly and the plane can't handle it, it will just drop and not fly anymore. before that happens, the plane senses it and sends a vibration through the yoke, the steering wheel for the pilots. and physically vibrates it. and we can quantity faye what that sounds like. and detect it and put it on the cockpit voice recorder transcript. >> that is why it is essential, we keep saying -- >> to recover it. >> that is why it is important to get these boxes. >> what is it like for you as an investigator to listen to these tapes which are absolutely private, they are never released, the tapes, because obviously the transcripts are but you never hear the voices.

it is always maintained very closely. what is it like for you as an investigator to hear those tapes? because very often those who were involved. >> it is not easy. once tapes come to my attention, it is because there is litigation as a result of a plane that has crashed. and so the end of the recording, which is recorded, is, can be very unpleasant to listen to. and certainly i don't share that with anybody. but it is part of my job. >> but, so they never release him. wasn't united 93, did not they release the last -- we've heard, we heard their voices. weren't those released from united 93 from 9/11? >> on flight 93, that is the plane that crashed in

pennsylvania. what happened was, one of the hijackers thought he was talking to the passengers over the intercom. and he radioed what he was saying. in fact, he said words to the effect that ladies and gentlemen, please remain seated. there is a bomb. we're going back to the airport to see if our demands will be met. and that was transmitted and received. and i've heard that recording. >> you hear the other planes going, united 93, united 93, come through. the other planes around it saying did you hear united 93 saying someone saying there is a bomb on board. did you copy? others are saying, did you copy? so that was why that was released. >> yes. wasn't the cockpit voice recorder. >> there was a, it was a different environment. >> don't go anywhere.

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day 31 and not a single shred of concrete evidence. the lack of information is still too much for families. some are heading back to beijing waiting for bate of news. you're hearing from relatives of the people who were on that plane. how are they taking this news that the search has some new energy? >> reporter: that's right. this is new energy. but really, the family members,

don, are jaded. they're numb. they've had information like this before, if not the same type of information, certainly leads that have been being extinguished. though australians are calling this important and encouraging, the family members want more concrete evidence. and they said, it is just a process of waiting now. >> maybe this is a time. maybe the next couple days, the next couple years we will find the ending. there will be a time that it will end. >> when that ending is, no one knows at this point. these family members certainly are kind of readying themselves for a very long wait. that anger that we saw is no longer there. i think many of them are just totally exhausted. >> you know, david, is there any controversy about how this information about the possible audio contact came out?

it came out from a reporter instead of from the official agency. >> well, there were a lot of questions over this weekend about how this came out. it came from state media, chinese media which is state controlled. it is unclear at this stage how the information flow is from the chinese to the australians and the malaysians. though the australian head of the search is saying he is satisfied with that information, there might be some language barriers. when we put questions to the chinese government on that that have not responded to this point of a day later. though it is a long weekend in china. there is a little confusion as to whether the chinese are conducting the search just like the others in the same command and control or whether they are reporting directly to beijing. certainly it appears all the countries, the more than a dozen planes and shims out there today

searching are all sparing no effort to try to find this plane at this point, of course, don. >> thank you very much. the biggest clue in many days came from the chinese. they're looking in their own search areas and reporting to their own chain of command. is that a problem for the other seven countries involved? we'll talk about that next.

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new leads into the flight of 370. a new ship has arrived where the chinese crew detected some electronic pulse. analyst sas don't get excited. it could be nothing at all. and we're learning flight 370 deliberately skirted indonesian air space as it went off the grid and veered off course. possibly to avoid radar detection according to a source. why would someone steer the plane that way and where is it now? those are the key questions that

investigators are trying to answer. they're trying to answer that fast. our panel is back with us. a cnn analyst and a 777 pilot. tim taylor, submersible specialist. paul ginsburg is a forensic expert. allan diehl is an air force investigator. rick gillespie is here. les, start with you. china heard these pings outside the specified search area. is this a case of china playing by their own rules and they may know something they're not telling us or something that we don't know? >> possibly. but what is the end game? let's make that water under the bridge. let's move forward and see what the situation is with what they found. >> what would the end game be? >> it is to find those black boxes. >> i wonder why would china be doing these things on their own? allan diehl, what do you make of this? >> well, they may have just

looked in the right part of the hay stack. clearly there is a problem when you're trying to run a coordinated effort if you've got elements going rogue. you may have double coverage in one area and no coverage in another. if they found black boxes, they'll be the most famous chinese people since the guy in tiananmen square. >> there is something to be said about coordination though. and you heard angus houston last night saying, listen, i understand there are journalists out there and they may get ahead of us. i understand the perils of working this type of story but there is something to be said about coordination and funneling the information through the proper source first. >> absolutely. i keep coming back to the 1937 u.s. government search for earhart. there are so many similarities here. and you can consider it a template for, in some cases,

what should be done and in other cases, what definitely shouldn't be done. that search started out as a purely u.s. coast guard search. and then the u.s. navy got involved and for a while, each was doing their own thing and then fortunately, it was all brought under command of the commandant of the 14th naval district at pearl harbor. then it was coordinated. yes, it is absolutely essential that everybody be playing on the same team. >> tim, if you have, you know, what is it? auvs and you've got ships out there and you've got people listening with the hydrophones and then you've got planes in the air. someone has to keep track of all this. and they have to report to one person, right? one agency. >> you hope so. but you know, these guys disagreed with the logic and started their own search in a different area. there's so little to go on here.

two people can look at the same sets of data and come one two different sets of conclusions. so maybe the chinese did that and said we'll look over here. maybe they got lucky. maybe not lucky. maybe we're unlucky and they looked at at this time right way. they may have some proprietary data they're not sharing. we don't know that. i would think they would but it may be military technology -- >> that they don't want to share. >> don, you and i, we're all, we saw the press briefing live. my impression was that the chinese were cooperating. it was a matter of trying to coordinate it properly. i got the impression he didn't have an issue, granted he was being diplomatic but i got the impression that he didn't have an issue with what the chinese were doing as far as what they were sharing. >> not publicly. >> china does have the most to gain and the most to lose having

the most passengers on board. >> certainly. and they also allowed, i think the air marshals said have the most resources if you count the surface ships and the aircraft. so certainly, they're very motivated to try to solve this problem. but maybe there was some logic that this particular chinese patrol boat captain was using. i'm sure he's probably aware in general what is being said. and maybe just said, hey, maybe it is in between these patterns so let's go look there. he put the semi ridges with the hydrophones and lucked out. we'll have to wait and see. >> they are using the rudimentary hydrophones. >> i take a little umbrage of that. people are drawing conclusion. that may not be what they're putting in there. and frankly, it is just a picture that you make a judgment

on. we use these hydrophones to tag sharks or turtles and we run around with tenders and operations to track them for sciences. so the tools they are using, obviously they can use them too but i think they have more sophistication. >> i think the end of the story will be when we hear the next ping, especially in the same area the chinese claim they heard it. that will bring everybody together. and i think it will be more unified and everybody will be in the same direction and they'll be more believability by everybody and i think that is really what everybody is hoping for. >> our panel is sticking around. last hour we made some pinger sounds that the search crews are listening for. we'll hear them again. meantime, air speed. the. a fuel and whether or not there was an experienced pilot at the helm. questions investigators are desperate to know. (dad) well, we've been thinking about it and we're just not sure.

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let's head back to the flight simulator now. les joins me too. you had a question for martin and mitchell about a scenario you'd like for them to try now. >> i think we discussed this earlier. did we get to the point, we could have set it up? or did i miss it?

>> we're there. we're at that point. >> okay. >> so you're at 12,000 feet altitude. what would be the max air speed, mitchell, that we could go? what would be the fuel flow per engine? >> just so people understand what we're talking about here. we just explained that. >> the max operating satisfied that for the aircraft. >> why don't you show us where we can see both altitude and speed readout? >> altitude is here. this is barometric altitude above sea level. this is your air speed. >> so we are at 12,000 feet, les. our speed right now is -- what is it? >> 318 knots. >> now we come to the critical issue which is what is fuel consumption. >> our fuel consumption is down here. so 2,600 kilograms per hour per

engine. >> we're reading this off the computer screen. >> that number. what does it mean? >> it means, it is a number. it just means that it is a parameter like anything else. at this altitude, this speed, we're getting this much fuel consumption from the engines. if you were to compare that -- >> i was going to ask you to demonstrate. we can see how fuel consumption kin crease. this is for the general public. >> marty, what was -- i'm sorry. >> we were at 318 knots. >> it is going to get a little noisy here. we don't want to push it to an overspeed. >> now your fuel consumption is over 9,000. >> exactly. >> but again you would not play the at this speed because this would be hazardous for the

aircraft. this is quite beyond the never exceeds speed. it is the structural integrity of aircraft would be in question at that point. >> to really do this right, i think put the aircraft on the course, which it is on. fly at 12,000 feet at this particular speed. and run it all the way until the fuel runs out. and then you can in theory see where you go down and pinpoint it on a map. not that that will locate 370, it is not. we're using very broad, general parameters. you would at least get to see if it is in the area where the ships are and if it could even go that far. >> that's exactly where i wanted to go with that. for that purpose. and 318 knots is interesting. i would have thought exactly where you would have put it. because may airline charts put us at 310 at that speed. that makes a difference in the

calculations as far as distance and as far as fuel consumption. so you said it exactly. thank you. >> we need to know. >> did they calculate the final impact using those parameters also in addition to being higher -- >> where would that put us? >> well, we don't know. we would have to run it. we would have to fly the full seven hours or so to really do this. there is no way to speed it up and project. we would have to do it. which we haven't done yet. >> that would take seven hours. >> you've been in the airplane for 30 days now. you might as well start now. >> we might as well. >> thank you, guys. appreciate it. thank you, marty. that's actually a very good point. where at 12,000 feet, if it is indeed possible. and it may be part of the calculations that those --

>> i wonder if they factored in all the probabilities of using that particular scenario. >> if you take a model and you take a tsunami and japan and stuff washing up on the shore and the united states, you know the beginning and the end point. if you take this ping as an end point and you plug it into the formula, they can make sense of some of the other stuff. so this is another clue, this ping. potentially, it may be the wrong ping, the wrong area. they may be able to answer some more questions. >> stay with us. stay with cnn for continuing coverage of flight 370 and the latest on the effort. much, much more ahead. plus, this u.s. paratrooper and a rescue on the high seas to save the life of a very sick 1-year-old. [ female announcer ] grow, it's what we do. but when we put something in the ground, feed it, and care for it, don't we grow something more? we grow big celebrations, and personal victories. we grow new beginnings, and better endings.

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we'll get back to the hunt for flight 370 in just one minute but we have some other stories we're keeping an eye on. a u.s. air force parajumpers came to the rescue of a very sick little girl almost a thousand miles off the coast mexico. she and her family were on a sailboat when they called for emergency help. the 1-year-old girl is now on board a navy ship. last we heard she is in stable condition. president barack obama and michelle obama will attend a memorial service. three soldiers were killed and

three were hurried when specialist ivan lopez opened fire before taking his own life. they said that lopez' struggle with depression and anxiety and after the shooting, president obama vowed to, quote, get to the bottom of exactly what happened. defense secretary chuck hagel will get to board china's new aircraft carrier during a trip to china this week. the u.s. defense officials says a tour was requested and china agreed to it. he'll be the first american to board a chinese aircraft carrier. his visit is significant as usa and china try to improve relations and it come to the heel of china participating in the multinational search for the missing malaysian airliner. teams searching for flight 370 are racing to confirm the pulse signals detected by a chinese ship. the latest and best lead. one that won't last long with the pingers of the black box dying. if they're not dead already. these signals may be the black

boxes from the malaysian airlines plane. interestingly they were heard outside the search zone. another acoustic event was also detected by the australian ship ocean shield about 300 miles away. so i go now to my panel. paul ginsburg is an audio expert. and then paul, what are the words acoustic event mean to you? >> i was wondering why they use that term. i assume it means they weren't sure. that there was something that could or could not have been the pinger. it may have been distorted as others have said by the propagation through the water, the variation in speed of the sound between the pinger and the receiver. and it may have been slightly off frequency. it may not have had all the characteristics of what the pinger signal should have. or it may have had the characteristics but they were distorted so they did not want

to come out and be firmly saying that this was what they were for. >> you said that there are so many, i guess, distractions is a way of putting it. there are so many, so many different variables. the water, the currents, how deep it is, the topography, all those things. the may not is sitting on top of the boxes. if there's debris on top of that. they may not have all the characteristics but it could still be the pingers. >> absolutely. it is worth looking into. once there are more ships in the area and there are more receptions of this tape of signal, then perhaps we would have something more definitive. and of course, we're still against the battery life which is coming to an end. >> so the batteries don't just go, all of a sudden, poof, they're gone. the signal gets weaker and

weaker. >> that's correct. and some of the other characteristics may change as well. >> meaning? longer pulses in. >> depending on the design of the unit. it may retain the characteristics and get weaker or perhaps the signal will start getting slower and slower as well as weaker. it depends on the manufacturer. >> stick around. our panel of experts will be here a little longer. last hour we played some of the pinger sounds. we'll hear those again and discuss next.

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a couple things just into cnn. first up, new video. this is a chinese aleutian isle 76.

taking off from perth in search of night 370 getting an early start before the sun comes up. it takes a while to get there. they want to be there as the sun come up over the search area. they're racing to confirm also the pulse signals detected by a chinese ship. the latest and best lead that they have. but one that won't last long with the pingers, the black box dying if they're not dead already. this is a new search map. there you see it. it shows three areas that they'll be searching today. the australian government, maritime agency just releasing this today. just moments ago. as you can see, they'll be leaving from perth and then another search crew. those are the three today. and then you saw the chinese aleutian taking off. let's bring in paul ginsburg, an expert here with timothy taylor

and also, les abend. we were talking about those acoustic events that they heard. this is a chirp and a tone. let's hear the pure tone first. like an alarm. [ tone sounds ] >> this isn't the exact one but this is, you're getting us an example. >> correct. one that we can hear. the actual one is above our hearing but this would be something like a smoke detector telling you that its batteries are weak. a pure tone. the next one is one other way that they can program the pinger to put out a unique type of wave

form. [ chirping sound ] >> you can see it has a different shape as well. >> i wonder if any of these, either of these is, i don't know, what they prefer, is preferable. is easier to hear. does it make a difference? >> i might ask the rest of the panel. >> alan diehl, would you know that? >> depending upon where in the ocean they are, other possible -- >> i'm sorry. rick gillespie, would you know that? either of these two preferable? >> i wouldn't know. there are a lot of sounds in the ocean. i would think you would want to pick something that is least likely to emanate from biological sources. >> correct. >> they've done that with the frequency. they've got a frequency less likely but it is a signature, if

it is a known signature they can look for it. that's where guys like paul come in. >> that's the thing. many people were saying, this could be ocean life, it could be a whale, a tag. do, it could be any sort of military signal that they use for testing. you're saying there are signature that's are specific to these boxes. >> i think dolphins have high intelligence but i don't know that they could repeat the exact pulse safe. >> the tag. the tag that they use on the dolphin to track them. >> possible. >> i was going to say that the animals aren't quite good enough to do 1/10,000 of a second. when they use tags for animals, they don't run, they would be out for months. they'll put it so it will beep every ten minutes, every half-hour. that way it lasts for five years.

and then they'll put arrays in different areas that they're studying. they don't usually track them. they can but they'll put different arrays in the ocean that will pick up and then collect that data. then you check the data and you find out if that animal came through at what time of day and year. the pinging rate of 1 per second is highly unlikely that it would be used in tracking underwater animals. >> different settings for different applications and expected life times. >> so if you go through ocean with this hydro foam, right? how often would you detect that? this is a frequency -- >> there is no -- >> my understanding, there is no law saying people can't program frequencies, manufacturers and the science work that we've done with certain animals actually have the same frequencies for different research groups. so you'll have the same data showing up on, you know, a turtle study and a shark study

or a whale study. it is not proprietary. and no one exclusive. >> a fresh mystery surfaced today. a senior malaysian government source said the aircraft may have deliberately skirted indonesian air space in an effort to avoid indonesian radar. meanwhile, good weather is expected in the search area today. a few of the nine military planes helping in the search have just taken off from perth. three civil aircraft and 14 ships will assist in today's search. the race is on to find the pings coming from the black boxes before the batteries fail. three reports of possible audio contact have been reported. two from a chinese ship. one from an australian vessel. still no confirmation if they are connected to flate 370. i'm don lemon. i'll be back in one hour from now after a special cnn report.

we'll have a report in one hour. and don't forget, you can get the latest on cnn.com. but first, a brand new else of cnn's original series, "death row stories." that begins right now. -- captions by vitac -- www.vitac.com on this episode, the murder of a wealthy young man in the big easy seals the fate of a petty drug dealer. >> that's the guy who did it and there's no question in my mind. >> and gives two out of town lawyers a crash course in new orleans justice. >> do you really understand what you're up against? >> when evidence of innocence emerges -- >> something was going on that was very unscrupulous and deliberate. >> the system will stop at nothing to get the verdict he wants. >> we had struck out and he was going to die.